@officernickwilde It doesn't sound like you've changed a setting accidentally, especially if Ctrl + F and F3 still work correctly in Chrome and Edge. Since you're using the Early Access build, this is more likely to be a browser-specific bug or a conflict with an extension.
I'd recommend trying the following:
Test whether Find in Page works from the browser menu.
Open a Private/Incognito window and check if the shortcuts work there.
Temporarily disable any extensions that might override keyboard shortcuts.
If the issue persists, consider updating to the latest Early Access build or switching to the Stable version to see if it's resolved.
If none of these steps help, it's probably worth reporting it as a bug since it appears to be specific to the Early Access version.